Method, System, Mobile Device, Apparatus and Computer Program Product for Validating Rights Objects

1. A method of determining whether one or more rights objects associated with a mobile device are valid, said method comprising: retrieving a multimedia network time from a network transmitting multimedia; updating a secure clock maintained on the mobile device based at least in part on the multimedia network time and a user-set clock, wherein the secure clock is not user-changeable, updating the secure clock comprising: determining a difference between the multimedia network time and the user-set clock, storing the difference, and calculating the secure clock based at least on the stored difference, re-retrieving the multimedia network time every predetermined interval of time, at each interval, re-calculating a new difference between the multimedia network time and the user-set clock, replacing the stored difference with the new difference when the new difference differs from the stored difference, and re-calculating the secure clock based on the new stored difference; and using the secure clock to determine whether one or more rights objects associated with the mobile device are valid.

2. The method of claim 1 , wherein a time period during with the one or more rights objects is valid is checked using the secure clock.

3. The method of claim 1 , wherein retrieving the multimedia network time comprises automatically requesting the multimedia network time from a network entity upon boot up of the mobile device.

4. The method of claim 1 , wherein retrieving a multimedia network time comprises: requesting the multimedia network time from a network entity.

5. The method of claim 4 , further comprising: in response to receiving an error message indicating that the mobile device is outside of a multimedia signal coverage area, re-sending the request to the network entity for the multimedia network time.

6. The method of claim 5 , wherein the re-sending the request is done for a predetermined number of times.

7. The method of claim 6 , wherein the re-sending the request is done until the multimedia network time is retrieved.